* {
    padding: 0;
    margin: 0;
}

a {
    text-decoration: none;
    color: #707070;
}

@media screen and (min-width: 750px) {
    html {
        font-size: 37.5px !important;
    }
    body {
        margin: 0 auto;
    }
}

body {
    max-width: 750px;
    font-family: "Microsoft YaHei",sans-serif;
    background-color: #f1f3f7;
    -webkit-tap-highlight-color: transparent;
    -webkit-appearance: none;
    position: relative;
}

img,a {
    -webkit-touch-callout: none;
}

/* 头部 */
.header {
    height: 1.3rem;
    border-bottom: 1px solid #eaeaea;
    font-size: 0.35rem;
    line-height: 1.3rem;
    text-align: center;
    color: #1c1c1c;
    background-color: #fff;
}

/* 导航 */
.nav {
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
    padding: 0.45rem 0 0.6rem 0;
    background-color: #fff;
}

.nav .item {
    display: flex;
    width: 33.3%;
    flex-direction: column;
    align-items: center;
}

.nav .item:nth-child(n + 4) {
    margin-top: 0.62rem;
}

.nav .item img {
    width: 1.08rem;
    height: 1.08rem;
    border-radius: 0.54rem;
}

.nav .item span {
    margin-top: 0.1rem;
    font-size: 0.25rem;
    text-align: center;
}

/* go */
.go {
    display: flex;
    justify-content: center;
    padding-bottom: 0.45rem;
    margin-bottom: 0.1rem;
    background-color: #fff;
}

.go>img {
    width: 7.22rem;
    height: 1.52rem;
}

.content {
    padding: 0.3rem 0.2rem;
    background-color: #fff;
}

.content .hd {
    display: flex;
    justify-content: space-between;
}

.content .hd h4 {
    display: flex;
    font-size: 0.28rem;
    color: #333;
}

.content .hd h4::before {
    content: '';
    display: block;
    width: 0.38rem;
    height: 0.38rem;
    margin-right: 0.2rem;
    background: url("../icons/i2.png") no-repeat left top;
    background-size: 100% 100%;
}

.content .hd .i1::before {
    background-image: url("../icons/i1.png");
}

.content .hd a {
    font-size: 0.22rem;
    color: #999;
}

.zhidao {
    margin-bottom: 0.1rem;
}

.swiper-slide {
    width: 3.38rem;
    height: 3.8rem;
    text-align: center;
    background: #fff;

    /* Center slide text vertically */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: 300ms;
    transform: scale(0.8);
    opacity: 0.5;
    font-size: 0;
}

.swiper-slide img {
    width: 100%;
}

.swiper-slide-active,.swiper-slide-duplicate-active{
    transform: scale(1);
    opacity: 1;
    font-size: 0.25rem;
}

.xuexi {
    padding-bottom: 1.6rem;
}

.xuexi .bd {
    padding-top: 0.4rem;
    padding-bottom: 0.2rem;
    display: flex;
    overflow-x: auto;
}

.xuexi .bd .card {
    padding: 0.1rem;
    margin-right: 0.3rem;
    margin-bottom: 0.1rem;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.25);
}

.xuexi .bd .card img {
    width: 2.7rem;
    height: 1.7rem;
}

.xuexi .bd .card h5 {
    margin-top: 0.1rem;
    font-size: 0.25rem;
    color: #333;
}

.xuexi .bd .card p {
    font-size: 0.23rem;
    color: #999
}

.xuexi .bd .card .red {
    color: #ff4400;
}

.footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1.2rem;
    display: flex;
    z-index: 9999;
}

.footer a {
    width: 25%;
    font-size: 0.24rem;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.footer a img {
    width: 0.4rem;
    height: 0.4rem;
}